CMBufferQueueGetMinPresentationTimeStamp(_:)

Declaration

func CMBufferQueueGetMinPresentationTimeStamp(_ queue: CMBufferQueue) -> CMTime

Parameters

• queue:

  CMBufferQueue being interrogated.

Return Value

The earliest presentation timestamp of the interrogated CMBufferQueue.

Discussion

The search for earliest presentation timstamp is performed in this API. If you know your queue is sorted by presentation time, CMBufferQueueGetBufferCount(_:) is a faster alternative. If the getPresentationTimeStamp callback is NULL, kCMTimeInvalid will be returned.

See Also

Inspecting Duration and Timing

• CMBufferQueueGetDuration(_:)
• CMBufferQueueGetMinDecodeTimeStamp(_:)
• CMBufferQueueGetFirstDecodeTimeStamp(_:)
• CMBufferQueueGetFirstPresentationTimeStamp(_:)
• CMBufferQueueGetEndPresentationTimeStamp(_:)
• CMBufferQueueGetMaxPresentationTimeStamp(_:)
• CMBufferQueueGetCallbacksForSampleBuffersSortedByOutputPTS()
• CMBufferQueueGetCallbacksForUnsortedSampleBuffers()